Annotations: 4R4E

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B [auth A]		e4r4eA1	A: Anticodon-binding domain of Class II aaRS	X: Anticodon-binding domain of Class II aaRS	H: Anticodon-binding domain of Class II aaRS	T: ArsA_ATPase, ParA	F:	ECOD (20:10:01)
A [auth B]		e4r4eB1	A: P-loop domains-like	X: P-loop domains-related	H: P-loop containing nucleoside triphosphate hydrolases	T: DegT_DnrJ_EryC1	F:	ECOD (20:10:01)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B [auth A]	1.10.1660.10	Mainly Alpha	Orthogonal Bundle	Multidrug-efflux Transporter Regulator	Chain: A	CATH (4.3.0)
A [auth B]	1.10.1660.10	Mainly Alpha	Orthogonal Bundle	Multidrug-efflux Transporter Regulator	Chain: A	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth B], B [auth A]	PF00376	MerR family regulatory protein (MerR)	MerR family regulatory protein	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
D [auth E]	DNA (5'-D(TPGPTPCPAPGPTPA)-3')	-	-	-
C [auth D]	DNA (5'-D(APTPTPCPTPGPAPCP*A)-3')	-	-	-
A [auth B], B [auth A]	HTH-type transcriptional regulator GlnR	DNA binding binding nucleic acid binding transcription regulator activity DNA-binding transcription factor activity identical protein binding protein binding	regulation of cellular process negative regulation of biological process RNA metabolic process regulation of primary metabolic process negative regulation of RNA biosynthetic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process regulation of RNA metabolic process negative regulation of cellular process negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of cellular process negative regulation of biological process RNA metabolic process regulation of primary metabolic process negative regulation of RNA biosynthetic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process regulation of RNA metabolic process negative regulation of cellular process negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process negative regulation of macromolecule metabolic process regulation of biosynthetic process negative regulation of DNA-templated transcription regulation of biological process negative regulation of metabolic process biological regulation primary metabolic process regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process regulation of gene expression biosynthetic process negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process metabolic process cellular process regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of DNA-templated transcription regulation of metabolic process negative regulation of RNA metabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth B], B [auth A]	IPR009061	Putative DNA-binding domain superfamily	Homologous Superfamily
A [auth B], B [auth A]	IPR047057	MerR transcriptional regulator	Family
A [auth B], B [auth A]	IPR000551	MerR-type HTH domain	Domain

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.